Instances›AWS EC2›r5d›r5d.metal
Compute
vCPUs96
Memory768 GiB
Mem / vCPU8.00 GiB
ProcessorXeon Platinum 8175
Clock speed3.1 GHz
Architecturex86_64
Storage
Type4 × 900 GB NVMe SSD
Bandwidth19,000 Mbps
Throughput2375 MB/s
IOPS80,000
Networking
Performance25 Gigabit
Max ENIs15
IPv6Yes
GPUNone
Family sizes
r5d.large2 vCPU · 16 GiB
r5d.xlarge4 vCPU · 32 GiB
r5d.2xlarge8 vCPU · 64 GiB
r5d.4xlarge16 vCPU · 128 GiB
r5d.8xlarge32 vCPU · 256 GiB
r5d.12xlarge48 vCPU · 384 GiB
r5d.16xlarge64 vCPU · 512 GiB
r5d.24xlarge96 vCPU · 768 GiB
r5d.metal96 vCPU · 768 GiB
r5d.metal

The r5d.metal is a memory-optimized AWS EC2 instance: 96 vCPU and 768 GiB of memory, 8.00 GiB per vCPU. In the name, "r" stands for RAM, "5" is the generation, "d" marks local NVMe storage and "metal" is the size within the r5d family. It runs on Intel Xeon Platinum 8175 at 3.1 GHz, and AWS introduced it in February 2019. AWS has since shipped r6i, r7i, r8i and r9g; r6i.metal is the direct replacement at this size. No single Spot node covers 96 vCPU and 768 GiB, so the equivalent is a fleet: 6 × mh.vs1.2xlarge, 96 vCPU and 768 GiB in total, $6.91/hr on AWS in US East (N. Virginia), from $0.126/hr on Rackspace Spot. Spot delivers compute as managed Kubernetes, so a node pool of that size is the native shape of the answer rather than a workaround — provided the workload scales horizontally.

Match qualityVirtualised, not bare metal

r5d.metal is a full physical server — no virtualisation layer in the way, direct access to the hardware, and a socket count that licensing can verify.

Rackspace Spot no longer sells bare metal; everything in the catalog is a virtual machine. You get the same cores and memory (6 × mh.vs1.2xlarge, 96 vCPU, 768 GiB), but not the dedicated hardware. If you picked r5d.metal because you needed the real machine — nested virtualisation, per-socket licensing, low-level profiling — this is not a replacement at any price. If you picked it because it is the biggest r5d, it is the same compute for a lot less.

Runs as a fleetNo single Spot node has 96 vCPU; the largest comparable one has 16. So this runs as 6 nodes. That works if your workload already spreads across machines, and doesn't if one process needs all the cores together.
No local diskr5d.metal comes with 4 × 900 GB NVMe SSD attached to the machine. Spot nodes use network storage only, so that disk doesn't come with it. If you were using it as fast scratch space, you'd move to a persistent volume or object storage, which are slower to read.
Pricing by region
1 hr
RegionAWS on-demandAWS Spot1-yr Reserved3-yr ReservedRackspace SpotYou save
US East, N. Virginia$6.912$2.340$4.355$2.986$0.126
$6.786 savings
US Central, Chicagono AWS region$0.126
US Central, Dallasno AWS region$0.786
Hong Kong$8.400$5.292$3.629$0.126
$8.274 savings
Sydney, Australia$8.352$2.933$5.262$3.608$0.126
$8.226 savings
London, UK$8.112$2.094$5.111$3.504$0.786
$7.326 savings
US West, San Jose$7.776$1.212$4.899$3.359$0.012
$7.764 savings
US Central, Dallas 2no AWS region$1.452
When to use it
Good for
  • ●Large JVM heaps and application servers that hold state
  • ●OLAP and business intelligence query engines
  • ●Real-time analytics over hot datasets
  • ●Workloads that fit inside 768 GiB of RAM
  • ●Jobs that want 4 × 900 GB of local NVMe scratch space
  • ●Network-heavy services — AWS rates this size at 25 Gigabit
  • ●Anything that shards cleanly across 6 nodes, which is how it maps onto Rackspace Spot
Avoid if
  • ●Starting a new deployment. r6i.metal is the newer generation at this size.
  • ●The working set needs more than 768 GiB of RAM
  • ●You need dedicated hardware. Rackspace Spot sells virtualised compute only.
  • ●CPU-bound work. You are paying for memory this workload will not use.
  • ●More than 8.00 GiB of RAM per vCPU is needed — that ratio is fixed for the whole family
  • ●The work is single-threaded. Most of these 96 vCPU would sit idle.
Stop overpaying AWS. This compute costs $5,046/mo on AWS vs $92/mo on Rackspace Spot.
  • Spot sells spare capacity at market prices. It is the cheapest compute on the internet.
  • Prices are set by supply and demand. You pay what the market decides.
  • Compute is delivered as fully managed Kubernetes. All infrastructure is taken care of.
  • Egress costs $0.01/GB after the free allowance. AWS charges $0.09/GB.
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